Seiko Cal. 6278 - 663

The 6278-663 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6278 caliber with 33j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-a22a28c23317]

Also known as: Shogun, Helmet

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

46mm

Case Thickness

11.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

170m

Dial Color

Silver

Jewels

33j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1989

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